A sorting station is provided with a deck screener including at least one filter and a fluid source configured to supply a fluid; a chute in fluid communication with the deck screener; a drying station in fluid communication with the chute; a settler in fluid communication with the drying station and the chute; and wherein the fluid is configured to wash matter disposed onto the deck screener. Methods of sorting a particular matter from a mixture of matters, and processes of filtering soil are also provided.

A sorting station is provided with a deck screener including at least one filter and a fluid source configured to supply a fluid; a chute in fluid communication with the deck screener; a drying station in fluid communication with the chute; a settler in fluid communication with the drying station and the chute; and wherein the fluid is configured to wash matter disposed onto the deck screener. Methods of sorting a particular matter from a mixture of matters, and processes of filtering soil are also provided.

A method of treating mercury-contaminated material to obtain a treated product having reduced mercury leachability includes the steps of (a) admixing the mercury-contaminated material with a reagent system comprising calcium sulfide (CaS) and trisodium phosphate (TNaP), wherein the calcium sulfide and trisodium phosphate are preferably provided at a CaS:TNaP ratio of from 2:1 to 1:2, on a dry weight reagent basis, and the reagent system is preferably provided in an amount equal to 0.4% to 5% by weight of the contaminated material; and (b) adding water as needed to achieve a moisture content of at least 5% by weight of the contaminated material.

A system and method for extracting hydrocarbons utilizing recirculated washing medium to enhance efficiency. Some embodiments include a helical agitation member configured to promote extended contact between material containing hydrocarbons and a washing medium.

A system and method for extracting hydrocarbons utilizing recirculated washing medium to enhance efficiency. Some embodiments include a helical agitation member configured to promote extended contact between material containing hydrocarbons and a washing medium.

A porous micromodel network to simulate formation flows includes a substrate, two or more porous micromodels formed on the substrate and a fluid inlet formed on the substrate. The first porous micromodel defines a first fluidic flow pathway and is representative of a first hydrocarbon-carrying formation. Flow through the first fluidic flow pathway is representative of flow through the first hydrocarbon-carrying formation. The second porous micromodel is fluidically isolated from the first porous micromodel. The second porous micromodel defines a second fluidic flow pathway different from the first fluidic flow pathway. The second porous micromodel is representative of a second hydrocarbon-carrying formation different from the first hydrocarbon-carrying formation. Flow through the second fluidic flow pathway is representative of flow through the second hydrocarbon-carrying formation. The fluid inlet is fluidically configured to simultaneously flow fluid to the first fluidic flow pathway and the second fluidic flow pathway.

A soil washing process includes mixing water and contaminated soil in a log washer, separating the soil and water mixture into a first stream of wet soil and a second stream of water and floating organic materials, dewatering the first stream of wet soil to form a cleaned soil stream, dewatering the second stream to separate out the organic materials and form a water stream, separating the water stream into a stream of non-colloidal particulates and a stream of colloid-containing water, dewatering the stream of non-colloidal particulates, and adding the stream of colloid-containing water to the soil and water mixture. The method may further include returning a first portion of the colloid-containing water to the log washer, and drawing off a second portion of the colloid-containing water to filter out the colloids before returning a clean water stream to the log washer.

A soil washing process includes mixing water and contaminated soil in a log washer, separating the soil and water mixture into a first stream of wet soil and a second stream of water and floating organic materials, dewatering the first stream of wet soil to form a cleaned soil stream, dewatering the second stream to separate out the organic materials and form a water stream, separating the water stream into a stream of non-colloidal particulates and a stream of colloid-containing water, dewatering the stream of non-colloidal particulates, and adding the stream of colloid-containing water to the soil and water mixture. The method may further include returning a first portion of the colloid-containing water to the log washer, and drawing off a second portion of the colloid-containing water to filter out the colloids before returning a clean water stream to the log washer.

A dissolved air floatation apparatus including an ultrafine bubble-containing liquid production device and a dissolved air floatation tank. The ultrafine bubble-containing liquid production device includes a gas-liquid mixing unit and a bubble-containing liquid separation device. The bubble-containing liquid separation device swirls a liquid containing ultrafine bubbles and larger bubbles in a storage tank to concentrate the liquid that contains the ultrafine bubbles and the liquid that contains the larger bubbles to a central part of the swirling flow followed by discharge. A pressurized ultrafine bubble-containing liquid is mixed in a raw liquid containing a subject to be cleansed and is poured into the dissolved air floatation tank to cause a suspended substance and a dissolved component in the raw liquid to be adsorbed on an interface of fine bubbles and be floated in the dissolved air floatation tank to be extracted.

A dissolved air floatation apparatus including an ultrafine bubble-containing liquid production device and a dissolved air floatation tank. The ultrafine bubble-containing liquid production device includes a gas-liquid mixing unit and a bubble-containing liquid separation device. The bubble-containing liquid separation device swirls a liquid containing ultrafine bubbles and larger bubbles in a storage tank to concentrate the liquid that contains the ultrafine bubbles and the liquid that contains the larger bubbles to a central part of the swirling flow followed by discharge. A pressurized ultrafine bubble-containing liquid is mixed in a raw liquid containing a subject to be cleansed and is poured into the dissolved air floatation tank to cause a suspended substance and a dissolved component in the raw liquid to be adsorbed on an interface of fine bubbles and be floated in the dissolved air floatation tank to be extracted.